diff --git a/configs/mscc_servalt_defconfig b/configs/mscc_servalt_defconfig
index 9134768..1f56875 100644
--- a/configs/mscc_servalt_defconfig
+++ b/configs/mscc_servalt_defconfig
@@ -63,6 +63,7 @@
 CONFIG_MSCC_SERVALT_SWITCH=y
 CONFIG_PINCTRL=y
 CONFIG_PINCONF=y
+CONFIG_SPECIFY_CONSOLE_INDEX=y
 CONFIG_DM_SERIAL=y
 CONFIG_SYS_NS16550=y
 CONFIG_SPI=y